Inside Europe’s New Mega-Tunnel Under The Alps
Construction Docume... 10 Dec 2025
Welcome to The B1M
How Saudi Arabia is building the world's largest urban park
Saudi Arabia is planting more than a million trees to create the world’s largest urban park. Covering more than 16 square kilometres, King Salman Park is transforming a former airport in Riyadh into an enormous green space.
The potential impact is significant. Projections suggest the park could be 5–8°C cooler than the surrounding city, potentially reducing temperatures across Riyadh by around 2°C. But how do you sustain a million trees in a city where temperatures regularly exceed 45°C? The answer involves some extraordinary engineering.
HOT RIGHT NOW
New York authorities investigate deadly Brooklyn building collapse
The city's Department of Buildings has launched an investigation after eight people were killed in a three-storey building collapse in Flatbush.
Construction Mental Health Summit brings the industry together
The 2026 summit brought leaders, construction teams and advocates together at London's Science Museum for a series of conversations.
This is what Milan's replacement San Siro will look like
AC Milan and Inter Milan have unveiled plans for the 71,500-seat new Generali Stadium, to replace the legendary San Siro. The first match is targeted for the 2031-32 season.
BE SEEN
THE NUMBERS.
BRANDS WE'VE ELEVATED
